Balloon
Cars:
We spent the day designing, making and testing our own
balloon cars.
Designing:
First,
we discussed the science behind the balloon cars (forces) and the different
elements that we needed to consider in order for our balloon cars to travel the
furthest. We then drew two different designs for our balloon cars models taking
into consideration the different materials that were available to us. After
this, we got into groups of 3 or 4 and chose a final design by analysing all
the individual designs. We then drew this design.
Constructing and Testing:
Once
we had finished drawing our final design, we started constructing the balloon
cars with the materials stated on the drawing. After, break time we took our
cars outside to test how far they travelled on a mapped out track. When testing
our balloon cars and watching other peoples cars, we analysed what improvements
could be made to the cars in order to make them travel further (mass, axles,
streamlined).
Improving and Re-testing:
We
then improved the model of our balloon cars and then went back outside to test
them to analyse whether they had travelled further than the first test.